1999" 700 GT cylinder not firing

Hello all, i need some help. I have a 99" 700 GT that the right cylinder quits firing shortly after starting. put in three new plugs, start it and the exhaust pipes start to warm then the right one goes cold. pull plug and its wet so it has gas there. If I put it on a stand start it and rev it for a little while it sometimes catches up and stays firing. I took the middle and the right plug wires an switched them to see if the problem would follow to the center, instead the left plug quit firing. excellent comp. on all three. Any thoughts or help would be appreciated.

Thank You,
Lowrider1

1999" 700 GT cylinder not firing