slowing the 737

First of I wish everyone a very merry Christmas and may you all get the add-ons and payware you ask for..especially the new 747, hope it is soon.I have seem a few posts about the inablity to slow to IAS after a desent. While studing my "FMC User's Guide" by Bill Bulfer I saw he addressed this problem. He states that the 737 does not slow very well and that it requires 1 nm to slow 10 knots. He sets his T/D the required nm before the normal desent path to allow slowing. So if you will need to slow 40 knots to reach that IAS restriction start your desent 4 nm early. I hope this helpsRay