What should a shop normally do when asked to check/replace an impeller on an outboard? Do most shops just go in and replace it without checking anything else (compression/lower lube/etc.)? My previous guy always checked these things out with impeller change (in fact he said he always checks compression on any motor he works on as SOP) - new home/new shop this year, and when picked up the boat I said how does it look and he said he just changed the impeller - I would need to request checking anything else out explicitly. Was I spoiled by the first guy (who BTW always charged me $85, this guy $104!). Thanks...