I was also plagued by punctures on my cube during my daily commute and sods law means its always going to happen when its dark, lashing ice rain and howling wind . I also struggled to get the tyres off but brute force and levers always did the trick. I soon ripped the stock Shwalb tyres off and fitted nobbly maraphon plus and never looked back, not another puncture in 800 miles up to now (fingers crossed)