April TT comments

Crystallized Silver: 223
I found several 221 variants, and then found this route that skipped the outer ice slide.  This was enough for 223, and it transfers (with minor adaptations) to a 222 Lynx.
Disentanglement: 404
My first route was a 403.8, and on looking for alternate routes I noticed I did a section 2 moves suboptimally.  This is the level I'm the least confident in my route for.
Compact Contact: 266
I found a bunch of minor variations that gave anywhere from 260 to 263, and then I stumbled upon this ordering for the paramecium clearout.  If the first level wasn't "easy" to optimize, I'd be most confident in this route, though a faster yellow key route may exist, I was never able to avoid bringing a second block into the paramecia room to clear them all out.
The next day I noticed I missed a use of the block donut rule.  That boosted 265 to 266.