Ok, The kit that Rick sent me was a Plain spring for the primary, (Looked black to me) and a purple spring for the secondary and the weights. this did make a difference in mid range and top end. but i still dont have any low end, it still stumbles for about a second or two when i hit the gas. i am running a 260 on the main jet but i still think i am running a 25 on the jet pilot. i still have the stock carburator on. when i took it out for a ride today the spark plug is dark brown where it is gapped but the rest of the plug looks a little wet like its not burning all of the fuel or its getting too much oil. i still have the stock oil injection on. but i plan to get the oil block off kit. can anyone offer suggestions with the stumbling i have during take off. i forgot to say this , when i am running at about 1/4 throttle it seems like it misses quite a bit.
i did race a warrior today and i beat him by about 8 bike lenghts but he got me off the start for about 2 bike lengths. i also raced a stock 250r and beat him at the start and pulled strong at mid range and got ahead of him about 4 bike lengths, then he passed me after about 300 feet soundly. is this normal? or do i still have to do something? also forgot to tell you i have trail porting and a trail pipe

 

Call Rick and ask him but it sounds to me you need more engagment rpm.

 

i'm not familiar with that 34mm carb but,you should at least
go for a 270-290 main jets and needle i clip droped down as far the pilot jet,it doesn't do any big differences on a trail pipe.
it seem your secondary need a little tweaking,go for a 42-38 2-1 setting.
the stock oil setting would be too rich,try to lean it up,if you want to remove it,beware,the only thing i will do is save weights,because the system work pretty well,and pre-mix become a pain in the *** with time.

 

When you say dark brown near the gap are you talkin about the porcelain.Because the porcelain is where you need to read the plug.What plug are you running and what gap ?

 

The 25 pilot sounds a little small to me. I had a 30 in mine. It might be starving for fuel on the slow circuit. Try going up to a 30 and see what happens. Might not be it but it's worth a try.

 

whats the gap? the space between that little metal washer and the plug? what should it be for a 250. how do u check and what difference does it make?

 

Here is a pretty good article.

http://www.centuryperformance.com/spark.asp

 

Here's another one.

http://www.stu-offroad.com/misc/spark-2.htm

 

Hey man what's going on, haven't heared from you in a while. Anyways the one thing that I can tell you about you 1/4 throttle is that the pilot jet is responsible for this area of throttle, so you may want to check it and also you may want to give Rick a call sorry if this doesn't help.