I installed my denny t fuel pin today and I am impressed to say the least. However, when trying to remove the pump top to install the 366 spring I found that a previous owner had rounded the allen head screws off so that the 5mm allen wrench will not grab. What do y'all suggest?

 

Well depending on which one I'd go with a chisel and try to knock it loose don't go crazy the pump is aluminum!

 

a trick is with a small ballpin hammer "mushroom" the top to make it fit tight again.

or use a torx to get them out then replace them.