please can you help recommend us a good resource / website for different slings for ceiling tracks?

Hi toast, Bit daft that they gave you tracking but have left you without any slings!! The problem you will have is that the sling loops will need to be compatible with your track. You could try and find the maker of the hoist and then google them, phone the customer services and they will give you the contact for the local rep. The local rep can then come and meet you both and they can do the measurements and give you all the advice in one visit. If you can't find the make of the hoist then you could contact one of the local disability equipment suppliers (the shops that sell bath aids, mobility scooters etc) - they are usually very helpful and will come to the house, look at the hoist, measure for slings and then sell them to you! In my experience the reps are excellent and very skilled at measuring and advising. Good luck - let me know if you are still stuck and I'll see if I can think of another way round this. Arlene