You know.
You should take advantage of times like these to get your whole bottom end checked out.
Get a gasket kit for the whole thing.. and get someone to come over and take the whole thing apart.. You said you had metal particles in your oil.. if that's the case something is chewed up in there... could be any number of things from forks to crank bearings.. to xx x x x xx x x god only knows what.
Have the whole thing checked out.. spend your money wisely by only having to buy 1 set of gaskets, and go over the clutch, tranny, crank, piston rings, the whole caboot.
Then you know what you are riding and it gives a world of good feeling once it's all done right.
Do part now.. part then, you will go around in circles for ever.
Look at my SX.
My swingarm welds broke.. and since i'm putting a new swingarm in.. i'm putting in new swingarm bearings and seals. Ordering a new locknut for the swingarm. Having my diff overhauled with new bearings and seals.. and the list goes on.
One i'm all done.. i'll for sure my rear end won't have to be touched again for a long time !!!