I tried Tangled and tried to run my own Knot, the problem I had was I'd create a repository, have it get created correctly on my Knot, but then would never see any updates to the repo on Tangled itself.

The main issue is that even though I had the knot with IPv6 connectivity, it only really reliably worked once I enabled lots of IPv4 NAT'ing and also created a dummy A record for the Knot.

This is a known issue - https://tangled.org/tangled.org/core/issues/494