High idel

81cb750c. Idel perfect until you let off throttle. Coming to stop after warm and dropping speed down to idel RPM stay around 3000 If I kill Engin and restart it quickly it goes to 800 Rpm All new rubber on carb no air leaks Converted to Dymark electronic ing that has no advance mechanical Same problem no flooding bike runs great other high idel stopping acts like slides sticking. Running stock air box. Had pods Both same problem

Are the carbs clean inside? Mixture screws set correctly? Jets at stock sizes? Choke and throttle cables hooked up correctly and linkages moving freely? Carbs vacuum balanced on the bike?

Cables set correct Have sprayed starting fluid around all new rubber mounts Both sets Block to carb and card to filter. No increase in RPM .I have stock jets at low speed Primary are 102 Headers are 2 to 1 not requireing jet increase. Running is great pulls 7000 is second at 70 mph Converted to Dynmark igection system Carbs have stage 3 kits . They do help in slide return due to increase in vacume port size Eveyrthing in carbs was cleaned, Full break down all new o-rings and all internal parts new. This was done due to high Idel. If running 30 mph and about to stop a light I can shut off motor Few second restart by dropping clutch and 90% of time back to 750 to 800 rpm Wondering about slides sticking.. Have rebuilt hundreds of carbs of all kinds but this one is a problem Removed gas cut off to remove vacum line and have tested all points on block at points to set up carbs.. Plan on recal carbs with new set of gauges Compression great less than 2 pounds between cylinders New rebuild. Will say changing from stock ingdection to Dynmark has made one huge change in response. Motor does not flood Cables are new. My next stepis confirm cable is not dticking they are new cabled but have seen problems with push pull system. Seems spring gets weak and does not return to stops 100%

sounds like a float to high causing gas to be sucked in the engine during high vacuum. If you downshift and bring RPM's down slowly does isle settle at 800??