Mercury Mechanic near Grapevine

Who has experience using a Mercury outboard mechanic that is thoroughly familiar with CARBURETOR 4 stroke engines? I'm having an issue with the engine quitting when I go to idle and a hard time restarting after the engine has run and fully warmed up. It starts. idles and shifts normally when I first put the boat in the water. I know it's not the interrupter shift switch, bad fuel, spark plugs, or fuel filter. Mercury s/n 0T449260.
Any help would be appreciated.
Thanks

John I have used mech in west McKinney,and sent others to him.MIne was merc 200 efi that wouldn't run negot me going for reasonable price. Others on tff have used gary.Not sure about your 4 stroke,but is merc. Yamaha certified.Over 30 yrs experience.Hughes Marine.you can pm me. Hope this helps. let me know.

I'll give Gary a shout. thanks!

Give me a call 214-796-0373