I've been doing this it's just second nature of me when adjusting my chain on my Titan bikes
and I thought I would share how I do it.
You really can just eyeball it this carrier can run well even if it's off alignment a little but the way I'm demonstrating here would get your chain adjusted PERFECTLY.
I forgot to add that after you adjust the 4 sides check chain tension. If it's too loose then adjust
one bolt,measure,set then do the other three.
You want some play in your chain maybe 1/16 deflection or whatever. If your sprocket is not perfect you can get away with it even looser to compensate.
It's rather simple and a little romper roomish but it does the job.
I haven't had to adjust my chain on Cronus in a long time.
YouTube - Easy Titan chain adjustment