It was a case of 'all roads lead to Comber' as the game there became the only survivor in the Premier League programme.
And a bumper crowd witnessed an almost identical repeat of last week's game with CIYMS with North Down finding themselves inserted and immediately on the back foot as wickets tumbled.
The difference this week was that there was to be no fight back and wickets continued to fall, the home side struggling to an inadequate 109, bowled out in the thirty first over.
Nikolai Smith was the leading wicket taker for Inst with 4-35, while his namesake Nathan claimed 2-12 and James Magee 2-33.
All pace from Instonians who consequently had only bowled 24 overs when the 2 hour mark was reached but by then North Down were 8 down and the threat of a time penalty was never going to be in the equation.
When Instonians batted Nikolai Smith quickly became a candidate for MOM adding 25 to his earlier wickets and with Shane Getkate adding 34 the visitors could afford the luxury of Andrew White not getting to the crease, the skipper opting to send the youthful trio of James Hunter, James Metcalfe and Ben Rose in ahead of himself.
North Down's leading bowler was Peter Davison who made a late appearance into the attack taking 3-22 when he did so.
So Instonians come away with the points having conceded home advantage due to conditions at Shaw's Bridge and sit on top of the table ahead of last week's other winners, Armagh, Carrickfergus and North Down.
North Down lost to Instonians by 5 wickets.
The Green, 5 May.
North Down 109 (30.3 overs, Nikolai Smith 4-35, Nathan Snith 2-12, J Magee 2-33)
Instonians 110-5 (28.2 overs, S Getkate 34, Nikolai Smith 25, P Davison 3-22)