Re: upgrades help
Do not get wrapped around the axle about the cost of the tools. Firstly I PROMISE you that you will get your moneys worth out of the tools, and then some. (Plus you can get more that sufficient quality tools for our use at Harbor Freight. On line if not local.). Guessing torque = warped head. (Torque wrench at HF is $14.99) I am new to this as well, but have learned that the motors need only a reasonable amount of attention paid to them to keep running trouble free.
1. Check chain tension before every ride. Tighten it right away if it needs it, NOT when (if) you get back.
2. Check and tighten all bolts and nuts on the engine, mounts, and bike. (toss the fenders if you have them).
3. Use quality fasteners, not the supplied junk.
4. Use good gas and good oil (don't skimp to save $.25)
That is pretty much it. Everything else out there are just neat add on's to make the bike sound, look, feel neat or gain a few MPH here or there.
Stick with the basic bike and motor till it is broken in. THEN go an get the fun stuff.
Thats my two cents worth.