re. 100-4 carb problem

[Jonathan and Carole Quandt <fourqz@earthlink.net>]

I had the same problem with my 100-4 when hot.I installed hotter plugs 
and leaned out the mixture. I think the problem was fouled plugs but 
would be interested to hear from the rest of the crew since I tried 
everything I could think of including a new distributor with no success 
until I leaned the carbs out. Peace,Jaunito