I'm pretty sure we are close to the same when it's all said and done, i've got the purple barrel valve on my toilet. It never stumbles or anything, the only thing it's ever done was a highspeed lean pop when i first started running it and had a .125 pill in it, other than that it's like a carberator and easier to run. Maybe i was just lucky with mine, or it's because i've run injected or blown for a lot of yrs., but it just fell into place like it was supposed too.
Zip.