Both the Scottish and Irish Legends categories headed to Wales for a combined event and McLeish was one of several drivers to enjoy success at Anglesey.
His three wins have taken his 2023 tally to 12 and have catapulted him up seven places in Autosport's table.
Stewart Black narrowly denied McLeish a fourth victory in the opening heat on Sunday and that success has in turn allowed him to jump up four positions and into 12th.
Meanwhile, Peter Barrable twice topped the Irish contingent to improve his own ranking by 13 spots and is now one place behind Black.
McLeish has a further chance to narrow his deficit to table-topper Freddie Slater this weekend as he has entered the Knockhill round of the British Touring Car Championship-supporting Legends Elite Cup.
But, while the Legends drivers are gradually closing on Ginetta Junior dominator Slater, Formula Ford 1600 frontrunner Romanek is now his nearest challenger.
Romanek's latest triumphs came in the United FF1600 category at Snetterton, where he trounced limited opposition to win both races.
As well as propelling him from fifth to second in the table, the success means he is now just three victories behind Slater's 16.
Source: Autosport