vertical foam gun?

I'm much frustrated at the design of my expanding foam gun. The fact that the nozzle proceeds away from the can at 90 degrees means the can is horizontal when holding the nozzle vertical to foam e.g. A ceiling, and the cans are designed to only dispense when held vertically.

The gun came with 2 plastic tubes, and they're a pile of cack too, aside from being short, they seem to affect the foam and they drip constantly because the valve is at the wrong end of the tube (because it's part of the gun)

Does anyone know of any guns where the attachment point of the can is 45 degrees or less to the nozzle? This would allow the can to be maintained in a reasonably vertical orientation but still allow foam to be applied upwards..

We use this.....
It's the Soudal "comfort grip" stuff and it's the best available non-pro foam can around.
Always do ceiling abutments etc, whilst the can is at its fullest. Tilt the can 45 degrees and bend the nozzle with the other hand.

Just a thought but I wonder if one of those "bendy" drinking straws would fit onto the tube?

It's possible to actually buy a gun with drinking straws supplied:

http://www.ffx.co.uk/tools/product/Everbuild Gfapp75 5029347611880 P75 Bendy Foam Gun

A review on Amazon indicated he valve was, alas, in the body rather than the end of e straw, so during use it drips constantly as the foam in the straw expands

Perhaps a bendy straw will work, if I fit all the roof insulation with small gaps between and then in one operation afterwards, go round and foam it all up rather than doing it as I go (and ending up with dribbles of foam everywhere), then blow it trough with gun cleaner immediately..