No, not as long as your TSP contribution is reported on your W-2. It should be in Box 12, with code D. According to the Instructions for PA-40 W-2 RW:
The W-2 RW must be completed by taxpayers when the amount shown as Medicare wages in Box 5 of the W-2 are greater than Pennsylvania wages shown in Box 16 and there is insufficient information included on the W-2 to reconcile the wages without the additional information represented on the W-2 RW.
Your W-2 contains sufficient information to reconcile your wages without any additional information.