I've since filed out the transfer ports so there weren't any restrictions and planed the head and the cylinder body. I had to sand down the head quite a bit as you can see from the pics it wasn't completely flat. It raised my compression a little bit and now I've got a much better seal on the head. I also widened the intake port some.
No I have another headache. The bike runs like crap and has no top end. Once the gas starts running low though, it starts screaming and flies like a bat outta ****. Any ideas on the issue? I've moved the needle from the lowest position to the highest and it made no difference. Could it be that I need a smaller main jet?
Yes most likely your main jet is to big and causing your engine to run way rich, you can resize the jet you already have if you have a propane torch or it can even be done on an electric stove top if done with care and not left on burner to long.
here is a link to the drill bit set and drill pin vice you will need to redrill the jet after the hole in jet has been soldered closed.
http://www.widgetsupply.com/product/WB05.html
http://www.widgetsupply.com/product/SHG3-840.html
I have done many jets using this method, easy, inexpensive and works great, just get a small coil/roll of thin solid core wire solder, with scissors or wire cutters snip off a very small piece of the solder, maybe 1/8" or less, clean jet well with a good spray of carb cleaner to remove the oil, if using a propane torch, hold jet with pliers, lay small piece of solder over hole in jet now heat with torch until solder flows into jets hole and then remove heat and let jet sit and cool for a few minutes, this wont take long. ( its very important not to over heat the jet...!) just enough heat for the solder to flow and fill hole and then no more heat is needed, to much and you can actually melt the jet.
If doing the soldering on an electric cook top, just sit the jet on the heating area put small piece of solder into jet over the hole and now turn the cook top burner on, have pliers near by and as soon as the jet is hot enough for the solder to melt and fill the hole, remove jet and sit aside and turn cook top off.
Redrill with wire gauge bit, the #73 or #72 drill size has always worked just right for my NT carbs.
I hope this will help you.
Map