Well the new stem came in last night, I put it on the bike and rode my 6AM training ride, about 17 miles. I could tell the difference, I did not lower the stem so the bars were up higher as well as in closer. It's impossible to tell on a 1 hour ride as far as overall comfort is concerned. But after this short ride I know I need to drop the bar down at least one spacers thickness. I will do that tonight and ride the same route tomorrow. Another 50 miler is planned for Sat - that will be the real test.