how do i lower the temp of my engine, lean, richen, what needle?

Richen your HSN to bring down your engine temp..........what temp is it running at ??

uh, i forgot, it wazs a while ago, i just remember it was a little too hot, so ill check it again today and tell u

and heres another question, what are those 2 copper washer type things that come with the glow plug? i always just put one on, what do they do??

They are to seal the glow plug to the head and keep in the compression........More power if you keep it in the engine.

Start off by richening you high speed needle and that should fix it, most engines shouldnt go over 300F. ever.
The washers help with compression, as richie said, I run 1 washer on my buggy.

if you find you are fouling plugs then you use 2 washers.. lowers the compression

it would also help to know what engine , fuel and car you run too

im drivin my ofna ultra lx comp with a Force .26 engine, for fuel i use ELIMINATOR,