Hi Andrew: no worries about it being your case , it was mine from many years ago. Pt. doesnt have the best OH and had a real tough time with dependency issues a few years ago and his teeth took a beating during those days.
I am not big on the straight tip for these things as the troughing is so small that its tough to get anything in there. In fact I have told Hoya that for bone work a wider bigger tip might be in order.
I like your thinking about the length of the tip but it is so small at the end that the trough would be small.
I have used the 400 micron tip which is longer but again it is difficult to get much of an elevator in there , except a root tip elevator which I find works if the root is loose but otherwise not.
Its neat to see under the scope movement of the root tips, it really is quite obvious when it is ready tocome.
Its also great to be able to visualize the tip at all times.
It makes exos far easier and my assistant is able to see the tip from the monitor the whole time.
Thanks for the post…….
Glenn