We picked up a 2-105 that had some fire damage and the console had to be replaced. Found one off a 1755 that bolted right up. The only problem at this time is the tach from the 1755 is reading about 2x what it should be. Idle is between 1600 and 2000 rpms. Was there a different tachometer used for the White 2-105 and the Perkins engine. The 1755 had a Waukesha 310. We switched out the tack with one from an old 1850 with a Perkins but it didn't really change much. Any ideas? Would like to get this one item up to par. Tractor has been repainted and is almost ready to go. Thanks