Yeah mine is like that and started out surprisingly stable. Like 4/5/0/1 or so, consistently would hold any angle and you'd have to start it on anny to get it to go right. I feel like it took a year for it to be -0 for the HSS where on a flat release it would just start to drift. At 2 years it's 4/5/-1/0 so it needs to be released with hyzer to go straight and it will definitely drift right slight hyzer to flat release. At this point I can actually trust that it will go right on its own.
It took a lot longer than I thought to get to this turnover point, X plastic is durable. If you want a turnover Comet right away, if I were to do it again, I would add a flatter Comet like a flat ESP or something like that to the bag right away. The super trusty straight shot that your X is likely doing now is still very useful, but a flat Comet will flip from hyzer much easier than waiting a year+. Also that will make your current stable Comet stay in that place for longer because you won't be trying to beat it in.