E311 & EMan,

I agree with you on your point about "why put good money into old equipment. We have several otis units with these selectors. I have found if you maintain them they provide reliable service for many years.

I will say this, we recommended to MOD one of these units to a customer. The customer explained to me their reasoning why they don't wish to MOD. He explained if he took a loan out for 100k for 15 years the term would have paid 42000.00 in interest. He explained he would rather pay 20k now and gamble that at the end of the next 15 years he won't come close to spending more then the 120000.00 he would have paid out on a loan.

It's now been 8 years. All I can say is I'm glad I didn't make a bet that he was wrong...