As I have said, I have been using an additional screen since some time. It is a mesh 300 ss screen.
The screen is simply cut to size. It is easy to change, it has to be changed or burned only every few weeks. The great advantage is that no particles can pass through this screen / filter. Nothing lands in your mouth. The pull resistance is not changed. In addition, clean oil is produced in the condenser. I would not use my VapCaps without the additional filter / screen, which is why I strongly recommend it here again.
I have another recommendation :-)
I clean my VapCaps as well with alcohol. If the VapCap is properly encrusted (by oil / hash), then I take
Prowin. Prowin is a cleaner, which I bought some time ago to clean hard encrustations from my oven or my grill accessories. The stuff is very fast. I brush the VapCap with this stuff, let it work for 1-2 minutes, wipe it, rinse it, done. The Vapecap is as clean as on the first day. No crust, no discoloration, like new. And that in a short time.
Here is the only downside, it is very expensive. But you do not need very much of it, and you can use it for many different things.