When I first stat the bike in morning, it starts up fine. After a bit of riding, and the temp gets up to 190 or more, the bike won't start---unless I lean the bike to the left.... yes you read that right. I have to lean the bike to the left for it to start when it is warmed up.
Once it starts, does it ever cut out riding?
Especially if leaned to the right?
You could try checking the Bank Angle Sensor (BAS) via the service manual.
It's a fluid damped pendulum with a set of switches, and sometimes they start sticking.
Not common, but has happened in the past.
Once running, does the engine smell rich? If so, you can also check the Fuel Pressure Regulator (FPR) which does go out occasionally.
Raised and prop the fuel tank, then switch the key on and allow the fuel system to pressurize, but don't start the engine. Then switch off.
The FPR is mounted on the throttle body. Pull the small hose off the diaphragm housing and check if fuel leaks out. If it does, replace the FPR.
it doesn't cut off when riding or leaning. It doesn't smell rich either, I had the fuel pressure sensor replaced 3 years ago. The BAS sounds like a good place to start. It's just weird because it only does it when the bike is warmed up.
The BAS is the only device on the bike that is angle sensitive.
In the service manual, it's on P.5-55.
In essence, remove the BAS and place it in it's normal vertical orientation.
Then switch the key to on and then slowly tilt the BAS to one side.
At about 60 deg. you should here the BAS relay click, disabling the fuel pump.
Switch the key off, return the BAS back to vertical, switch the key back on, and then slowly tilt in the other direction with the same result.
If it doesn't operate properly, then the BAS may be bad internally.