when trying to start my 30 I have trouble getting it to turn over fast enough for it to start. I always have to jump it with my truck, here are all the things I have done new battery, rebuilt starter and generator all seem to check out and work just fine, also wiring is correct I know that a 6 volt system is weaker than a 12 but that is what it came with factor so it should work. I have at least two things I think may be the problem negative terminal wire gets hot when trying to start it so maybe something heavier would be better, but I have reason to believe it may also be the solenoid as before I got the starter rebuilt I got the system real hot and I wonder if that didn't burn the solenoid and make it weak it still starts be the gear shift can I get a solenoid replacement or do I need to change to a button. One other cause the may help it carb setting when temp is in the 70's and 80's I still have to crank the engine at full choke for some time before it tries to start any help there would be great also. I know this is somewhat long winded but any advise would be great. Thank you