Got my 1989 GL1500 back from the shop this past weekend and got to ride it fully to work yesterday. I had the carbs rebuilt along with the rear brake cylinder (finally have back brakes I can count on!). That daggone engine runs so freakin' smooth now with the rebuilt carbs that I can barely believe it's the same bike. Gone are the flat spots; gone is the longer than normal warm-ups in the morning; gone is the hard starting. That bike rides as smooth as home-churned butter now. It was an expensive repair, but it got rid of a gas smell in the garage as well that resulted from flooding carbs. and hopefully it'll fix my drop in my MPG from 36-38 to 28. In any case, the performance boost and smoother ride alone are worth the price of admission.