[Lardman]

Do yourself a huge favour - get an extra packet of bolts and drop 2-3 extra bolts in each channel 

[fatcat1955]

You found out as well. Tried numerous method's of getting them in once the gh was up.

[DD.]

I know what you're getting at, but for those who haven't done it, you can get these:

http://www.diyshop.co/products/444/

[JayG]

There is the option of buying crop-headed bolts which don't need to be inserted via the open end of the channel, although I have found them a bit fiddly to install correctly, and they are considerably more expensive than the standard bolts.

Edit - yes, the very ones DD! 

[Lardman]

http://www.diyshop.co/products/444/

Yes and if I could just find where I put the packet I bought all would be well  Actually DD it's all your fault I wanted them - I was attaching some chicken wire. I could only find 3 stainless penny washers too so things are all rippled  .

I have found them a bit fiddly to install correctly,

I had to take some mole grips and squish the sides a little on mine.

and they are considerably more expensive than the standard bolts.

There's less material they should be cheaper 

I also drilled a 3/16ths hole in the some of the bolt as Im too cheap to buy these http://www.amazon.co.uk/Greenhouse-Nut-Bolt-Ring-Set/dp/B002TJFA7S

[mumofstig]

Blimey - they are expensive got what they are, aren't they 

[bravemurphy]

I also drilled a 3/16ths hole in the some of the bolt as Im too cheap to buy these http://www.amazon.co.uk/Greenhouse-Nut-Bolt-Ring-Set/dp/B002TJFA7S

HEHEHE not just me then but the last time I broke me drill bit which could have been more expensive than the bolts