Silly me, that's all I can say. I've been using the 35ft SL2 for some time now, but very infrequently (only one commercial contract high enough.)
I needed some extra reach, so I bought an extra section some time ago, and a deep sill G-fit.
This property has got very old glass, and is quite thin, deep Georgian panes, and the brush doesn't glide over it very well.
Being used to the 35ft, I thought the 40ft wouldn't make that much more of a difference. Second (literally) small pane I did, I lifted the pole too far away, tried to put it back on the window, but instead of looking at the speed of the pole near the top, I looked more to the middle.
What followed was a brush that was going way, way too fast, and the deep sill g-fit giving it some extra punch. WHAM!!!, pane to smithereens.
Explained it to the Site manager's assistant, very very relaxed about it (laughing), he said don't worry at all about it, it's an occupational hazard (haha), it only costs 8 quid to replace, and Txxxxx here (decorator/handy man) needs some more work. Only then he looked up at the broken pane. Offered to pay for it, he wouldn't have it.
Man, I don't think I've ever seen anyone take a broken pane so lightly! Apologised to him, and to the person who will replace the glass, the other guy as well said "don't worry about it, it will give me something to do, it's the glass, it's very old and thin."
What a difference in weight/rigidity that extra section plus the deep sill g-fit gives, I was totally unprepared for that.
Typical Monday, had to go back home because I forgot my brush/goosneck to begin with, broke a pane, probably because I was trying to hurry up, took too long on the job regardless, and ran out of water well before then end of the day (didn't fill up completely!)
Oh yea, and half way through the job, the gooseneck decided that it wasn't pushed in correctly and promptly did a 90 degree turn, almost smashing another pane with the back of the goose neck!!!! And all that at 35ft+.
Have to go back tomorrow to finish it.
Well at least I picked up a £292 Domestic palace (in and out.)
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