A quick background...my crankshaft broke on my original motor. The boat is a 2006 Four Winns horizon 210 with a volvo penta gi-f. So I bought a replacement long block and brought my boat to a 40 year mechanic to swap it out. I got a call today from him telling me that the motor mounts are too corroded and he can't do the swap?!? Does this sound legit? Motor mounts I thought were replaceable so not sure why this is a show stopper. Can anyone help me understand why this would be a show stopper other than just not wanting to do it? The other thing he told was my risers are bad that's why I'm in this position. Can anyone recommend a good place to get replacement risers? Thanks for any and all help.