Just got a 1969 Starcraft Arrow with a 1959 35HP Lark on the back. Ordered a tune up kit and gear case seal kit. Question is, the kit came with 5 seals for the gear case. Looking at the manuals, I only see three. Prop seal, one on top of the water pump and one below the water pump.I also noticed the existing seals seem to have much more sealing surface on them(thicker seal) than those in the kit. Do some kits intend to double up on the seals? I have the manuals but still only see 3 seals necessary. What am I missing?