Keep BOTH seals and CA the outer one.
Pending on AGE of the SX bottom end, new engines also use a brass seal plate between bearings
2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.
You should be fine, but can add the seal plates between the web and outboard bearings easy enough.
Only effect is on PTO end you may need to shorten drive collet thickness of the seal plate installed ?
2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.