JRCollings
.040 Over
Ok well here is the outcome of that little experiment... I put them back on.. whilst the additional draft was nice in the heat, the buffeting, especially today as it is windy (25mph steady, gusts 40mph) was unacceptable - I could not read signs / focus on stuff; bobbing my head around too much - so a good lesson learned, but put them back on and things were transformed - for the better!