0001193125-04-018065 SC 13G/A 1 20040210 COLUMBIA ACORN TRUST WAM AQUISITION GP, INC. MONACO COACH CORP /DE/ 0000910619 3711 351880244 DE 0102 SC 13G/A 34 005-46495 04580643 91320 COBURG INDUSTRIAL WY COBURG OR 97408 5416868011 91320 COBURG INDUSTRIAL WAY COBURG OR 97408 LIBERTY WANGER ASSET MANAGEMENT LP 0000908733 0000 363820584 DE 1231 SC 13G/A 227 W MONROE STREET SUITE 3000 CHICAGO IL 60606 3126349230 227 W MONROE ST STE 3000 CHICAGO IL 60606 WANGER ASSET MANAGEMENT LP 19990108 SC 13G/A 1 dsc13ga.txt AMENDMENT NO. 1 TO SCHEDULE 13G