I've heard and seen nothing but good things with the Christini bikes. But I've never rode one.
ON PAPER there the coolest thing out there.
My CR500AF with a IRC 140 MB5 rear tire tractors and hooks up WAY better in low traction situations than my WR does.
If 2 strokes are difficult to ride in low traction situations, then why do they power most trials bikes?
Too bad you are in New York. We've got a few trails out this way for two strokes.
I use to own a CR500. It did almost anything. But certainly does not hook up better than my WR450. That's why I got rid of the CR500 and kept the WR.
Sounds like you need to put a new 140 M5B on the WR. Also might depend on what year WR you own.