A couple questions on maintenance

How often should I clean the inside and outside T pipe on my vent pipe.

Also my father has a Enviro Evolution and he has to dump the ash pan out every 4 days is that normal. I have a omega which i love and that thing can go over a month but thats a self cleaning and the ash pan is HUGE.

I only have an outside Tee on my setup, but I check it about once a month to be on the safe side. I've seen recommendations on cleaning the complete exhaust after every ton. I usually don't find too much in the clean-out when I do check it.

I clean from the stove to the outside tee where the pipe goes to vertical every ton. The vert section gets swept in the spring. I find most of my ash in the first 3 ft of pipe.