EXHIBIT 10.19 AMENDMENT NO. 2 TO PURCHASE AGREEMENT MADE AS OF APRIL 23, 1997 AMONG ANSWERTHINK CONSULTING GROUP, INC., GOLDER, THOMA CRESSEY, RAUNER FUND V, L.P., MG CAPITAL PARTNERS II, L.P. GATOR ASSOCIATES, LTD. AND TARA VENTURES, LTD. WHEREAS,...