One shot off the pace after round one, Stuart Easton carded a second round of 66, three under par, to give him a single stroke lead after 36 holes on 129, nine under par.
Jack Broun (Turnberry) had a second successive score of 67 to give him a four under par total to lie fourth equal after round two, whilst a second successive level par score of 69 by Ruben Lindsay (Ayr Belleisle) leaves him in joint 24th place on 138.
Sandy Buchanan (Prestwick St Nicholas) lies in joint 34th place, a second successive round of 70 being sufficient to see him make the cut for the closing two rounds, right on the 2 over par mark of 140.
Alyx Murray (Prestwick St Nicholas) missed the cut, fading to a four over par 73 in the second round for a 36 hole total of 143, 5 over par, whilst Robbie Muir (Kilmarnock Barassie) also finished on 5 over par for two rounds, a second day round of level par 69 improving on his opening day, where the damage was done with a five over par total of 74.
The closing two rounds will be played on Sunday, 30th of May.