Hi emezez,
I am very sorry about the problem you are experiencing.
You are right it's impossible to have more than 8 patterns by chain. The manual is wrong here.
Shift + select is buggy that's right. The only workaround here is to select the patterns you want to drag one by one in the same order you want them...
I don't get you DEL+select problem could you please tell me more ?
I've put your requests in our base. We will discuss them.
Thank you