HI sailing fan, my humble apologies I hadnt heard of an SB8 before & couldnt open your pictures before for some reason so I assumed you were talking about a YSB8. The principles apply the same but your layout is a bit different. No wonder I couldnt figure out the sump pan
Hope I didnt cause you too much confusion
Feel quite embarassed now. Should have read your posts more closely.
Wishing you a speedy recovery. Compass