The pair fought out the finish at Catterick last month, with Micky Hammond's Cornerstone Lad coming out on top on that occasion.
Nigel Twiston-Davies' Turning Gold (6-1) was 2lb better off for a length on Merseyside, but it still did not look like it was going to be enough for most of the run-in.
As the shadow of the post got nearer, Sam Twiston-Davies just managed to force his mount in front on the line to win by a nose, with the favourite Lisp back in third after making a bad blunder at the second-last.
Richard Bovis is head lad to Twiston-Davies and the winner is owned by a group of his friends.
"I'm delighted. Last time out at Doncaster the ground was just too quick for him, he has to have it soft," said Bovis.
"He may get an entry in the Fred Winter, but we'd only think about running if it was soft.
"Today was his Gold Cup."
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