Hey,
Decide to make the node UDP server tonight. Works like a charm. You can install the server on your computer or on a raspberry pi and it will send commands from SmartThings to lightwave via UDP (very fast). This means there is no need to go via the LWRF servers and negates the pin issues that some of you have been having.
Going to write some instructions for it tomorrow evening and finish off the dimming commands. All as easy as original implementation.
Here is a video of it in action - https://youtu.be/WG4qNBCrdG0
and here is the GIT repository - https://github.com/adamclark-dev/smartthings-lightwave-node-server
Will create a new post with instructions and will link in this one tomorrow.
Would say the cost to integrate is probably the £15 or so to get a Raspberry Pi and the time to set it up, which should be around half an hour.
Cheers,
Adam