Thanks for the comment that you're using a CineCity blimp. I can't find a decent windscreen solution for my AKG C34, and one of the CineCity blimps - while a bit more than I'd like to spend, at least not out of reach like the Rycotes - just might be the best option I have right now. Only catch right now is the mic holders, even the larger 20-25mm ones, aren't quite big enough (the C34 is 25.4mm, so maybe it'll squeeze in, dunno yet).
The NT4 has the same problem (heavy @ 480g and fat @ 23mm) , solved by
1. Doubling the rubbers on the cradle.
2. Connecting a rubber band over the top of the mic (suggestion from fellow taper).
The suspension clips are very flexible plastic and so won't break if stretched wide open. The extra 2 mm on your mic will be even more of a stretch, but a couple of rubber bands like I have should keep it all together. Alternatively you could ditch the cradles altogether and string a X of twisted heavy rubber bands in the suspension ring and slip the mic in the middle.
The CineCity blimp is built to a price, and your mileage may vary, but I have 2 and am very happy with them. You do get a bunch of spare rubber bands and three sets of clips (different sizes) with the blimp and the fake fur cover. They certainly would not work in a commercial environment where the guy who was using the blimp didn't pay for it
This is what sent me on a quest for more wind-protection. The NT4 is in one of the blimps, and I have 2X AT3032's in the boot of the car to keep them out of the wind, the foams that came with the AT3032's just couldn't cope with the breeze that day. I recently got an R44 so started doing 4 channel field recordings.
http://www.freesound.org/samplesViewSingle.php?id=54963I had the AT3032's in the boot to record the bass frequencies and keep them out of the wind, not ideal. So I will set them up either side of the blimp next time and do some nice matrix stuff.
digifish