I did a couple of things to the new 1.20 DP, I removed the choke and replaced the m3 x 8mm back plate bolts with m3 x 10 mm bolts. I made a blind tap and extended the threads. the holes were plenty deep. The 8mm bolts did not have much engagement, especially where the carb mount bracket bolted in the top back plate bolts. The black O-ring replaced the choke slide and compresses by about 1/16". Note unusual top end of the intake tube. It is a cast aluminum tube.