Yeah, if the pump is that old, I wouldn’t be attributing the drop in performance solely to the brand of manufacture. Not only that, but I’ve read and heard from multiple people that between DW and Walbro, that it is typically DW that is the more reliable and consistent, but I’m sure most of the “evidence” was purely anecdotal.
Also, I need you to take me for a rip in this thing. Gotta do coffee at Namao sometime!