i don't even know where to start, such a thought full and helpful response, il wack a 36tooth on and see how she does, iv heard of port work and after looking at how blocked the transfer and exhaust ports are i think its a must, based on what iv seen people use Dremel tools is there any specific bit i should use or just go at it
I get my dremel type tools from the website, sanding drums and polishing wheels also.
they also have the number micro size drill bit sets that some of us use to drill our main jet once we solder it closed when we're fine tuning our carburetor.
pritty much all things dremel/rotary tool they have and at a good price.
There are several simple things that can be done to these little engines that can add performance and in some cases some extra reliability.
I specifically went to the section on the website where the carbide burr bits are, ese will give you the best result and they last a long long time.
The ball end type, the barrel shaped and also the one that is kinda arrowhead shaped.
Popular Dremel Tungsten Carbide Cutters like 9901, 9905, 9910, and 9936. Shape, smooth or grind hard materials. Use on hardened or stainless steel, cast iron, nonferrous metals, fired ceramics, plastics and hard woods. Structured tooth cutters have fast-cutting, sharp teeth for greater material...
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Also make sure you have a good supply of base gaskets and one thing that some of us do sometimes is we add an extra base gasket which raises transfer and exhaust port just shy of 1mm, of course the intake port is raised also, so you can mark bottom of intake port and then with the dremel you can either remove the 1mm that way, or the simpler way is to mark the 1mm on bottom of piston skirt on intake side and simply remove that 1mm of material there and get the same result.
this (can) allow the engine to rev higher if all else is capable of the higher revs.
Hope this helps a little and Im looking forward to what your results are Sambo
just be safe, have fun and be patient knowing there is a learning curve we all go through with these engines and if you work at it and do the correct mods, you'll get better than out of the box performance feom you engine.