I have stock crack the seems to be running fine with stock tubes. I have tried rolling a Chatham 2399 and after a few minutes I get smoke. The first time The Crack was closed so I couldn't tell where the smoke started from. I put everything back to stock and Crack is fine. 2nd time I propped the plate up so I could see underneath. It seems the smoke is from the power cord area. Any ideas what could be the cause? Is it a bad tube?
Thanks,
Steph