Measure the floor, walls, etc.

It is also easy to measure your ROI using Adwords if you get everything set up correctly.

That's very easy to measure and a worthy goal to strive towards.  

I'm assuming they compare offers based on a few criteria, final amount, cash versus financed, buyer background, property intent etc.I'm trying to figure out how differently financed purchases would measure up against each other as I naively assumed the seller gets the same amount.

Good job on making mini measurable and attainable goals.

That doesn't mean low quality (many manufactured homes are quality builds), but it is a niche market aimed at those wishing to own a home at a fraction of the price of a house.This overall problem has been solved with modular housing long ago.

I aim to refine my criteria of rentals, guidance on how to acquire rentals for low money down, tax help, legal advice, and property management recommendations.

I hope this helps.86.752 Foreclosure by advertisement and sale.A trustee may not foreclose a trust deed by advertisement and sale in the manner provided in ORS 86.740 to 86.755 unless:(1) The trust deed, any assignments of the trust deed by the trustee or the beneficiary and any appointment of a successor trustee are recorded in the mortgage records in the counties in which the property described in the deed is situated;(2) There is a default by the grantor or other person that owes an obligation, the performance of which is secured by the trust deed, or by the grantor's or other person's successors in interest with respect to a provision in the deed that authorizes sale in the event of default of the provision;(3) The trustee or beneficiary has filed for record in the county clerk's office in each county where the trust property, or some part of the trust property, is situated, a notice of default containing the information required by ORS 86.745 and containing the trustee's or beneficiary's election to sell the property to satisfy the obligation;(4) The beneficiary has filed for recording in the official records of the county or counties in which the property that is subject to the residential trust deed is located:(a) A certificate of compliance that a service provider issued to the beneficiary under section 5, chapter 304, Oregon Laws 2013 (Enrolled Senate Bill 558), that is valid and unexpired at the time the notice of default is recorded; or(b) A copy of the affidavit with which the beneficiary claimed, under section 2 (1)(b), chapter 304, Oregon Laws 2013 (Enrolled Senate Bill 558), an exemption that has not expired;(5) The beneficiary has complied with the provisions of ORS 86.748;(6) The grantor has not complied with the terms of any foreclosure avoidance measure upon which the beneficiary and the grantor have agreed; and(7) An action has not been commenced to recover the debt or any part of the debt then remaining secured by the trust deed, or, if an action has been commenced, the action has been dismissed, except that:(a) Subject to ORS 86.010 and the procedural requirements of ORCP 79 and 80, an action may be commenced to appoint a receiver or to obtain a temporary restraining order during foreclosure of a trust deed by advertisement and sale, except that a receiver may not be appointed with respect to a single-family residence that the grantor, the grantor's spouse or the grantor's minor or dependent child occupies as a principal residence.

I got a foundation leveling company come out and take measurements, ultimately determining that the foundation was within tolerance. 

The idea is for each refi is to get you back ALL of your original outlay ie. to not fall short by even $2k.Another idea about refi is that you should aim to achieve (low) conventional interest rates.I certainly agree that you shouldn't go above 75% leverage (especially if paying 8-12% interest).Once you run out of private Lenders, you'll likely be limited to 70% of appraisals thereafter, meaning that your future purchases should look for greater equity upside from the start.