OK so the first three are very similar, and the #4DJ is quite a bit thinner on the small end. Like the stock needles that people taper in their dremels.
I think the last needle is going to make the mix richer at wider throttle positions.
yes
yes and yes
I will as well try to taper my stock needle, as I have the factory pro needle that is so close to stock that I can just revert back to that if the taper fails.
I will do a lekker writeup when I finally get around to do this....
the plan will be a double taper, which I will explain later.....
I will tonite try and do all the measuremenst that I require for my thought process.
I think the most difficult part will be the actual tapering, cause the: jas moer it into a dremmel en grind die ding approach will not really work for me