My friend has a 77 50hp evinrude that he just got out of the shop. he had the impeller changed and took it out to the lake and it started dying after wot. he put muffs on it in his drive and started it up. the engine is leaking between the 2 halves of the upper and lower unit. the edges of the 2 units do not align up the are misaligned by about a 1/8th of an inch. i do not know anything about evinrudes only mercurys, he wants me to help him, what should i look for to fix this. the shop that put the pump in is now closed.<br />tks,<br />Darrel