I check with factory already.
The reason why the catalyst and oil water seperator have this kind problem:
1. The plastic material element
2. The temperature too high
The plastic material will have the wax element, this is can not avoid.
For the way to deal with it, the temperature should be not too high, 200 is better.
And the way to clean the catalyst room and oil water seperator, pls scrape it.
For the catalyst room, no need put catalyst inside it.
If u have anyknow questions, pls let me soon.
I am fine, just last week get terrible cold, and now it is much better now.