Throttle gets hard after driving for a while...

I have come to the conclusion that my throttle pedal is getting stuck after some driving. I mean is not stuck stuck but you have to hit it slightly harder than usual to accelerate. AFter it engages is smooth all the way until you release it and want to hit the gas again, you got to tap it a bit harder.

WHat can I do to fix this? I already dropped some brake cleaner on to the spring on the TB. I actually feel the TB fine (its not hard when you manually move it)

Is there anything you guys suggest? I already checked for vaccum hose and stuff in the middle but everything seems to be fine.

Any help will be greatly appreciated as always.

TIA!

I just found out about this thread this morning...Thnx...by the way git-it I did look for it but could not fnd anything...if you look at the time the posts were done, his was a minute after mine...so I should be the one getting all the responses and he should lock his...LOL...