i found a water leak under the kitchen sink and it was the chrome p trap had rusted through.i went to the hardware store to get a new trap and all that they had was 1 1/4" drain kits. i was told by the gentleman in the plumbing dept. i could use 1 1/4" inch pipe in the kitchen with no problem. i installed the 1 1/4" pipe because company was on the way.will this drain be o.k or does it need to be replaced with 1 1/2" drain . thanks..