Aham,
What I am suggesting is that GMT&B original design was flawed. This is why they added (cobbled) the outside venting of the reefer for hot climates (but neglected to order the closing off of the original internal venting allowing communication between). They undoubtedly got both complaints about the charge rate and the warranty for the reefer being killed by the swing motor failure before the started installing absorption units. There were undoubtedly a few engineers hustling to get this all in a row. In real terms, the development time for the coach part was very short and did not allow for serious validation. - Says the guy who did vehicle validation. - This is not the first time and sure was not the last. I can provide many other anecdotal examples if you provide the beer.

But, after my own personal development, the only way to get serious on a decent house bank (more than a single Gp.29) is to relocate the converter. The possibility of successfully installing the required copper has a very low probability.

Matt