I have a dragster and I use an inline throttle stop for a starting line enhancer. The enhancer is a Biondo air on and air off version.

I feel like either my cable is stretching or I'm losing air on the throttle stop while going down the track. The feeling inside the car is that the pedal is going further down but I know it isn't because the car has a strong metal pedal stop that is adjusted properly. I also know my carb is going wide open.

Has anyone else felt this?

Side note, I'm using a 100 psi pre set regulator from Biondo.

check all of the exhaust ports and other air passages.maybe a needle valve restricting too much.just a wag

Just a thought check and make sure something hasn't changed and your carb is wide open before your at the pedal stop that could give you the feeling your talking about.

Get the soapy water out and start checking for leaks. We had one leaking out the shaft seal. It was OLD...