Just an observation to let you know...I just replaced the nylon/delrin sheaves on my boom, which of course is Kenyon (17 years old). I had to get them from Rig-Rite, Inc. in Warwick, Rhode Island, because they are the ONLY one place that has the right size sheaves for the Kenyon boom. They charged me $10 each for two 1.5 inch nylon sheaves, and $9 each for two 7/8 inch delrin sheaves. These four sheaves weight about three to four ounces, and they charged me $9 shipping, in a 2x5 inch envelope, which could have been mailed for about $1.50. Sheaves from Schaefer, Ronstan, Garhauer, Harkin, Lewmar, etc..will not fit in this boom, so if you want to change them, BEWARE, only Rig-Rite has them, and they are not cheap...Just thought you 25.5 owners might want to know.