Stewartry kicked off with the strong wind advantage but the heavy pitch and a big strong Paisley scrum soon neutralised any advantage.
Heavy rain continued through out the game but a penalty award gave Craig Mosey the opening points.
The Paisley stand off dictated play through out the game kicking to advantage with a regular supply of ball from a strong scrum that took the first four scrums against the head.
Two strong running Paisley centres were making big in roads into the Stewartry 22 breaking through some poor Stewartry tackling leading to a Paisley try.
The conversion was added. Stewartry tried to keep the game moving forward but it was Paisley who added a penalty just before half time. 10-3 Paisley.
Stewartry continued to struggle in the scrums but held their own in the lineouts.
Paisley held the upper hand throughout the game and midway through the second half scored a second try to go twelve points ahead.
A quick penalty for Stewartry saw the forwards set up a ruck in the Paisley 22 giving John Kerr the chance to crash over for a try.
Craig Mosey converted. Any thoughts that Stewartry might just steal a victory were dispelled when Paisley broke through some poor Stewartry tackling to score a third try and pushed hard for a bonus point fourth try.
Stewartry who had managed to travel with a full squad this week denied Paisley their fourth try but the game ended with a second defeat in a row away from home leaving the Blacks in fourth place thirteen points behind unbeaten leaders Cambuslang.
This week it is another tough game against third placed Clydebank at Greenlaw with a 3.00pm kick off.