Mine doesn't have the pull start. It came with one but I removed because it wouldn't fit my RC 8.2 chassis. Considering a roto start though that also adds weight and I'm planning on racing. Can't decide if the convenience is worth it. The Dynamite pipe is nice but be warned, it is short. This exhaust is so short that I can't secure it to the exhaust stay post at the front of my chassis. Actually haven't secured it at all and after many crashes its shown no wear. As for the engine, I couldn't be happier. Broken in properly the Mach 2 .21 is a beast. One more thing about pull/roto starts, most engines can be retrofitted. Lastly, and most importantly, the weather. I hate when it's too cold to fire up my kit but I would hate it infinitely more if I wrecked my engine because of my impatience, so good call. I may have pointed these out to you previously but there are little battery powered heat wraps, like mini F-1 tire heat blankets, that you can use to heat up the engine, bet you could rig it to stay on the engine and keep temps up....

NEVER GIVE UP!