Hi, I'm new to the site and just bought a 2001 rm 250. I did a full rebuild; rebuilt crank and connecting rod, top end, disassembled exhaust valve and cleaned, cleaned magneto, cleaned car and put adjustment settings back to what my manual says. Basically everything has been cleaned and oiled. But now it won't start, it has spark but seems weak. The fuel bowl had fuel when I opened the drain and its fresh fuel and mixed to 32:1. Anyone have an idea what to try?