I purchased a used l981 Johnson 70 horse outboard on a pontoon boat. The threads on the tilt cylinder were damaged and someone had installed 4 set screws which did nothing more than leak hydraulic fluid into the lake. I used JB weld to seal the threads but I need to find a source for a new tilt cylinder. It is the same as on page9-19 of the Seloc Johnson/Evinrude repair manual Volume 1V. The engine is most likely a V4-thanks