Aftermarket carb for cs400/wt820

[Honest John]

working on an echo cs400 with carb issues. I would like to find a cheaper alternative to buying a new carb from ereplacements.com for 100 bucks. Can't seem to find a wt-820 aftermarket carb, but is there another carb that may work ? I could switch the impulse line/top over if necessary.

 

[Honest John]

crickets....

 

[Honest John]

I took the carb off of a parts CS 310 and put that on there. It seems like no matter how much I open the H it still stalls out when you throttle up. I had to change the top of the carb and switch it over to the original so that it would have an impulse line connection.