V5MT1 trans rebuild. Synchros

[EvilNavyGinger]

I have a 1990 and 1991 4x4 3.0 mighty max with the V5MT1 trans. 3rd gear was grinding but would go in with a double clutch easily. Figured synchro ring was out.
I disassembled the trans and started looking but all my internals looked good and came out fine when measuring tolerance. I am swapping all my synchro rings anyway. I purchased 4 rings as there are 4 to replace.
When comparing my old rings to the new ones there are some small differences like a wider cut out where the synchro key goes and a ridge added. Has anyone rebuilt this trans with new rings? They don't appear that they will operate any differently but I dont want to pull this trans again and disassemble it again. Not a fun job.