I am interested in purchasing the RV-8 Oil Cooler Mount that Showplanes offers which attaches to the engine mount behind cylinder #1.
Just to save confusion...I believe you meant cylinder #3. Sorry I can't comment on the hose issue as I installed the oil cooler as per plans and am hoping for the best with oil temps. on my Superior IO-360. After seeing how much of the fin surface is not directly in the flow of cooling air I'm a little worried but will wait and see, before a re-do.
Garmin G3X Touch VFR
Planning for Fixed Catto 3 blade