Converting my Husky 50 (outfitted with the WA-82A carburetor - which has given me fits) to the carburetor/choke set-up of a 51/55. I have the throttle and choke levers for the 51/55 and the air filter and mount assembly. I will probably just mod the 50's cover to accommodate the choke lever. It looks like Husky used both the Zama C1Q-EL7 and Walbro WT-170 for these 51/55 saws ... correct? Which carburetor would be my better choice to go with?