[Knot On Call]

Thank you everyone for your comments. Through the course of time, I removed the edging and molding around the swim platform, resealed and re-screwed and sealed the platform halves, replaced and resealed the SS molding, resealed the platform rollers. (Tiara had the drain holes from the rollers blocked behind the old molding.)After observation underway , incoming water around the swim platform was stopped. Rudder seals dry. I had a few questions:
jclark-"rubber exhaust hose joints"- do you mean the 12 in hose sections going to the underwater exhaust? "black seal covering the top" Is that the seal between the swim platform and transom? "Exhaust joints"- can you explain further?

Splendor- The material comes in a small sheet. Order from Tiara

Part # 5421910 IS THE WHITE RUBBER FLAP
$12.48 EACH

Part #0899618 STAINLESS PLATE THAT ATTACHES THE FLAP TO THE BOX
$88.00 EACH

Both in stock. Attachment plate we carry may differ from original.

Thank you all for the information. I will let you know if I find the source.