onan generator issue, seeping landing gear

[matsonelite69]

Hello Guys and Ladies, i just joined this site and now wished i had found it earlier. I have an 06 Elite 36TK3 and i have numorous issues wit it. I will start with the generator, it specs out for a 5500 gen, but the previous owner and his infinite wisdom had a 6500 onan propane gen installed, it will only run for bout 2-3 hours during cold weather, i have been awoke several times with icicles on my nose due to this issue, the boneheads at the dealership i purchased my rig from said it had to small of a regulator, and that they installed a larger one. I was born at nite but not that nite before. Is there any suggestions for this first of many issues? the next one is leaking curbside landing gear. :x