Parts question - set screws for flywheel pulley - K241
 

I've looked high and low for information on the size and thread count of the two set screws that hold the flywheel pulley/pto clutch drive plate on the crankshaft. I'm attaching a picture (copied from the Cub Cadet Specialties website) with arrows pointing to the set screws. The pulley on the K241 on my 104 has neither screw in place. The pulley itself seems to be fine. I'd like to replace the set screws without replacing the pulley, if these are standard sizes. Can anyone provide any information? Thanks.
Conig

set screws
 

they are 5/16 -18 tpi and for the PTO are 1/4 -20tpi

David - thank you sir! I'll be heading to my local hardware store on Saturday.
Conig