I am building the saw and only have an IPL and on this one thats tuff and my focus was on the case part. I am making videos. The brake assembly took me much longer than I expected but I whooped it. The assemblies are similar but very different. I wrote them in case there is something we need to know and so they can stop the kits and fix it or put a big note in the box if its an error like it looks.
My bearing should be here tomorrow and I can put the top on. I am going with the arrow is point the wrong way unless I hear from them first. Will advise when I hear.
Before you put the rings on, slide the piston inside the cylinder with arrow pointing both ways, and have a look inside both the exhaust and intake port. I think you will see in one orientation the end gaps will travel across the port.
One other thing before you button the top up. Check your ring end gaps and P/C clearance at the skirt. You can do this crudely with some feeler gauges.