so basically any rest that shortens your arrows less than your draw length would be considered an overdraw..
which inturn means a 29 inch draw witha a 28 inch arrow has an overdraw
NO this is not true. even with a rest right at the berger hole you can easily have a cut length arrow shorter than your AMO draw length. Remember AMO drawlength adds 1.75" to the true draw. Most people will have an arrow length shorter than there drawlength.
An over draw is measured by how many inches the rest lies behind the berger hole. This will allow for really short arrow lengths and real headaches when shooting.
Many of todays rests have a small amount of over draw in them...about 1"....and at this point in time is deemed normal.