I'm not trying to make a point, just relaying my observations because it's contrary to what I would have believed before going through this analysis exercise. 

I'll look for something more clear cut until I gain the experience I need to ask the right questions and perform the right due diligence.Thanks again.

To put the performance of these bonds into context, I feel performance is less FICO driven vs. a combination of skin in the game and experience as you alluded to. 

If you have reserves them, chances are, you have more reserves than your tenant and you may just have to exercise good judgement as to where you personally draw the line.

Either way, they are putting time and resources into renting your property and, like you, deserve compensation for work performed.

Does recoverable deprecation belong to me or the company that perform the work? 

I need some exercise. 

Depending on where you are in your contract, you may have a valid contingency to exercise to terminate the agreement, or you may not; if not, they could sue you for specific performance.  

Your notice of inspection will allow an inspection 24 hours later, which you exercise and discover that instead of paying the rent, they vacated the premises as stipulated in your pay rent or quit notice.

I've been working with the model for several years now... the first round didn't go very well because the provider of them more or less stopped performing.