Is DeWyane at the place recommended?
yes. Get ahold of Ronnie @ (817) 366-3403 he is at Xtreme Marine right next to Dewayne. They loosely work together. If all you're looking for is to have a sleeve swapped ronnie can do it a lot faster than Dewayne will. Dewayne good but slow is correct.
Ronnie is swapping a sleeve into my 225 pro max block as we speak, same day.