I have just received my 2021 late Tiger 1 kit.

Now, I have been looking over the kit and it's content, and as i have read a lot if older building blogs I notice that there are several new upgrades/changes to the kit. There is one thing new that raises a eyebrow. There is no longer O rings on the suspension arms/shafts. (The O ring between the shaft and bronze /brass bushing) And no oilring on the sprockets driveshaft.
The omitted oil seal on the drive shaft I can somehow understand, but the leaving out the O rings seams odd

Any thought on the matter? Should I take the time and effort to machine a groove and install the O rings?
When the time comes to actually start this build, i will do a build blog, unless you're all tired of seeing Tiger builds
