Noper, but I probably should have! All I did really was try and get off any rough spots I found and lubricated it with Moly and Heavy Tar. TBH I don't know enough about polishing, de-burring, etc I just was wanting to try to improve it just a little.
I think I succeeded with the 89, but I think I overdid the lubrication on the Titan as it still has a bit of smoke from time to time. I hope I didn't ruin the seal.