Thanks for the replys. One thing I might add is that making a steel nosecap with a thin web like these kits have requires a bit of skill and care. I generally don't suggest this for someone just getting started with these things. I also don't recommend trying to use a commercial cap. If you do choose to make a cap, I would use steel around .030 or a little less. It would be best if you form a slight groove in it as well.
Jim