strange -I run both the wt76 and the 201 carbs on my zdz50's with pipes -turn 22x8 props over 8400 in the air no lean problems
and no heating problems .why should the DA 50 go lean with these carbs -unless there is a isolated carb problem. ?
the 201 has 3 primary discharges and a high speed outlet the WT76 has one each - but the high end adjustment seems much the same on both - I have run a number of both -and prefer the 201 as it typically is easier priming and has a great low mid speed control .
There is a HD carb also which fits and runs very well -I got one of these from RCI a while back when testing stuff -it has more bore -but fit and ran same power levels etc..