Wally,
I had a MGB for years and the two best things I did were junk the stock wiring and go to a DGV Weber carb. I synched those damn SU's about once a week. And then I changed the cam, put on a header and twin 45 DCOE sidedraft Webers and it was a whole new animal.
I have considered that option, but just do not want to spend the 1500 to 2000 bucks it would take to make that happen. I spent 600 to have the carbs rebuilt by Z-Therapy and it ran great for a while, but slowly began getting worse. I am almost 100% positive it is a carb adjustment issue.
