3406b missing allen screws from pump??

Same spot where the screws are for fuel and torque rise adjustment?

 

Or do you mean farther up the little cover that you pull when you time it?

 

How much travel should there be

 

Are you talking about checking the rack where the adjustment screws are at the back of the pump? Sounds like when your trying to set your screws up based on the springbmethod. And if that's what your talking about. Last time I was in there i didn't feel any spring pressure when I would push down on the screws with the rack held to full throttle but I didn't have the key on either. I didn't realize it needed to be on

 

Took the cover off the front the rod moves pretty freely as the shut off solenoid rretracts. But after that hardly moves at all maybe a 1/4" of movement with me holdin it at full throttle

 

I felt that little bit of spring push back like you where talking about very small amount of push back but it is there also rack has 1/4-5/16 of travel like its supposed to. Seems like everything is right in the pump at that aspect. So I'm thinking I'm going to take it to my shop here soo. I'm not sure what else it could be and my local guy is really good so I had just been hoping I could figure it out and save some money