An error-strewn run of bogey, double-bogey, bogey at the 14th, 15th and short 16th for an inward 39 killed off his hopes.
Chris Currie, in the last trio off the tee, fired a seven-birdie, bogey-free round of 65 for a 12-under-par total of 132 to avert the possibility of a play-off between the clubhouse leaders, Greig Hutcheon (Paul Lawrie Golf Centre Inchmarlo) and Michael Patterson (Kilmacolm), and win the £1,100 first prize outright
The Caldwell Golf Club, Renfrewshire tour pro, who had eight birdies but three bogeys in his opening round of 67, eliminated the mistakes on the second day and won by two strokes from Hutcheon (69-65) and Patterson (69-65) who earned £775 apiece.
Hutcheon had eight birdies in his second round and was four under par for his last seven holes.
Patterson had seven birdies in his bogey-free closing halves of 31 and 34.
Paul O'Hara (North Lanarkshire Leisure) gained the fourth place prize of £625 with rounds of 68 and 67 for 135.
FINAL TOTALS
par 144 (2x72)
132 C Currie (Caldwell) 67 65 (£1,100).
134 G Hutcheon (PLGC Inchmarlo) 69 65, M Patterson (Kilmacolm) 69 65 (£775 each).
135 P O'Hara (North Lanarkshire Leisure) 68 67 (£625).
136 N Fenwick (Dunbar) 67 69 (£550).
137 J McGhee (Swanston New) 69 68 (£475).
138 R Arnott (Bishopbriggs) 70 68, S Gray (Lanark) 69 69 (£375 each).
140 S O'Hara (North Lanarkshire Leisure) 70 70, G Fox (Clydeway Golf) 69 71, P McKechnie (Braid Hills) 68 72, C Nairn (Kilmarnock Barassie) 66 74 (£262.50 each).
141 S Maxwell (Eastwood) 73 68, C Ronald (Carluke) 73 68, A Tait (Deer Park) 71 70, G McBain (Newmachar) 71 70, S Savage (Dalmuir) 71 70, G Wright (West Linton) 71 70, G Hay (Grantown on Spey) 68 73 (£128.50 each).
142 F McKenna (Caldwell) 74 68, S Morrison (Tain) 72 70, I Graham (Crow Wood) 72 70.
143 R Munro (Duddingston) 75 68, G Brown (Montrose Links) 68 75.
144 G Forbes (Mar Hall) 75 69, D Wood (Hirsel) 73 71, C Marr (Musselburgh) 72 72.
145 J Lomas (Caprington) 74 71, K Hutton (Downfield) 72 73.
146 I Stoddart (Deer Park) 75 71, A Welsh (Cathkin Braes) 73 73, P Robinson (Largs) 72 74.
147 S Borrowman (Linlithgow) 74 73, M Mackenzie (Edzell) 72 75, C McMaster (Downfield) 69 78.
148 P Wardell (North Berwick) 75 73, S Ross (Turnhouse) 73 75, M Owenson (Gullane) 73 75, C Porciani (Trump Turnberry) 73 75 C Goodwin (Strathlene) 72 76.
149 A Forsyth (Mearns Castle) 78 71, S McAllister (S McAllister Golf) 72 77.
150 R McConnachie (Peterculter) 74 76.
151 O Robertson (Panmure) 74 77
152 S Houlden (East Kilbride) 81 71.
154 G Hardy (Prestwick St Nicholas) 83 71, S Henderson (Kings Links) 82 72, N Gardiner (Cawder) 75 79, K Zeynalov (Portlethen) 75 79.
163 D Lee (American Golf) 81 82
164 Kirsten Scott (Gleneagles) 86 78, G Gillies (Baberton) 85 79.
168 S Wilson (unatt) 87 81.