Thanks for your input.I have bein a Lic. Contractor for years ,Plumbing & Gas ,so this is not new to me .Sorry if I gave the impression it is.I test on average 2 systems a week.Guages here for tests under 15psi must be in 0.10 increments as well.I also own the Ridgid cg-100 gas sniffer which is a great tool.Basically ,if I were able to determine a certain section is leaking which I cannot reach,then I would re-pipe that section.It all comes down to charging for my time and the owners lack of funds.I nixed the gas idea after considering the additional pressure to make the gas squeal would strain the system a little too much.My solution.I spoke to the owner and said if he wants it done he is going to have to pay the freight for the time.I told him I would help him with the repairs but that he was going to have to take a day off work and he will be the one crawling under the house and doing demo work.This will be on Thursday.He knows he is being charged a fee ,to be paid up-front ,for me to supervise/ guide him.I don't normally get mixed up in this kind of crap.No-money,no work!But I like the guy,he has nice tenants who have no hot water or heat for about 5 days now.He worked out something with them.I know ,I know,I'm a sucker,but I have a good conscience and the beauty of being the owner is I can help him if I want to .Lastly,if he were paying for my time I could get to the pipes.There happens to be HVAC supply ducts underneath which I could take apart and then re-install,but like I said he doesn't have the flow and there's a lot of work.I'll still make money.Not my normal wage but the Good Lord sees I'm trying to be a good person and charitable,I just can't do it all the time.Have a great day!