Take your time
We did this project on our C-22 last spring. It is not the most fun that I ever had, but the end product was well worth it. We purchased the window refit kit from CD. I do not know if they sell the kit for a C-30 or not. As someone else said you can get what you need from other suppliers. Take your time , as this is NOT a fast project. I used a product called Goof-Off to remove the old caulk etc. This stuff is great. I am not sure what I would have done with out it. You can get it at Lowes and paint stores. Get the non spray type. It is strong stuff, and the spray puts it into the air and you will begin to meet new friends in a few moments! We were very pleased with the results, and now we have only a very small drop of water comming in with a hard rain. Also remember to tape the glass so you will not get sealeant on it. This is very improtant if you do not want to spend along time cleaning up. Good luck, and remember you only want to do this once.Dale