As Raff mentions, you do not need the knurling with a modern rubber type seal.
If you look at your Eagle, you will most likely see a failry heavy knurl on that crank, but it as well isnt really needed. I make adjustments to the Eagle cranks, but they will work without it.The cause of the leak was most likely NOT the knurl, but something else, and was fixed when you did the repair.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
| 
