Well I actually already "ported and polished" tb. And I guess it went alright, but it didnt turn out the way I wanted. It really takes a lot doing it with just a small dremel sander and sanding by hand. So I checked a place called WW Granger today because they specialize in parts like the longer sanding bit like I need, but for some reason they didnt have it. If you read earlier on in the post I "hogged" mine out if you will so thats why I'm trying to find the exact tools needed to do the best job I can. I'll let you know if I can find a longer sanding bit. The hardest part that I seemed to have was sanding the surface inside even. I dont really know a good way to measure all of it to make sure its the same. If you attempt it yourself let me know if you come onto any good tips or pointers!!