Trike won't idle all of a sudden...

[megamile]

New to me 2011 Venture trike. Had it for 5 weeks; 3,000 miles after replacing fuel pump on the fourth day of ownership. Been running flawlessly since then until this morning. After I rode it home yesterday, I installed my new Grip Puppies. That is only change to trike. This AM I started it; ran well with choke out (50°) but after warm up would not stay running with choke in. Rides well as before; if I leave choke in it stalls when I downshift or stop. A little throttle will keep it running at stoplights. Grip puppies are not restricting throttle movement at all. Wondering how twisting Grip Puppies on would mess with idle, and how to diagnose and fix issue. Hoping forum can help; I have been away from Ventures for 2 years (after 25 years and 230,000 miles of faithful service) and have forgotten some stuff. (Harley trike proved to be a $20,000 disaster...)

[RDawson]

Wondering if maybe you got some bad gas? Filled up recently or used the reserve setting on the petcock for the first time in a while sucking some trash in? 
I filled up at an old country store in Illinois once and got bad gas, it took 3 or 4 tank fills before it worked itself out.  

[Marcarl]

Spray some carb cleaner in the tank. Maybe a whole can to half tank. It will help clean out any possible dirt as well as raise the volatility of the fuel. Worth a try maybe.

[megamile]

Will try. No new fuel since I put the puppies on. Thinking twisting the puppies on messed with the idle set screw. Found location of that screw; gonna check it later today. Hoping it's that easy. 

[Marcarl]

3 hours ago, megamile said:

Will try. No new fuel since I put the puppies on. Thinking twisting the puppies on messed with the idle set screw. Found location of that screw; gonna check it later today. Hoping it's that easy. 

Make sure you have the idle set screw and not a carb sync screw.

[RDawson]

Idle screw is under the tank right side. At the throttle there is a cable slack adjuster. 

[megamile]

Found adjustment screw under tank right rear. Adjusted it quite a bit and trike now idles correctly when warm. Hoping I didn't bend anything in that linkage when I twisted on the Puppies; will check that when I pull the tank this week to add the rest of the farkles. Thank you for your help; I had forgotten about that thumbscrew. I head to work @ 0100; will be 24° out. If I did it correctly, it will start with half choke. If not, I at least know where to start.