Time for carb rebuild / 97 OB Mercruiser / Weber carb

Have a 97 OB with a 350 Mercruiser package with the stock Weber carb. Does any on have experience in rebuilding Weber carbs? Source for rebuild kit? I would like to find a Mercruiser service manual online bit can't seem to locate one. I have read and watched some videos on Edelbrock carbs, but not Weber specifically. Boat seems to be running extremely rich and cranking/ideling is getting worse. Trying to make it another month or so on the water. Thought about a new Edelbrock, but wasn't sure about the linkage.

Thanks for any suggestions.

I just had mine rebuilt I had a holley on mine I got the rebuild kit from www.skidim.com they are great people and very helpful