I want to simulate performance of single cylinder SI engine fueled with hydrogen gas using GT power software.How to edit dimensions of intake and exhaust valve? Intvalve selected from ValveCamConn template has preset values of Valve reference diameter of 45.5 mm and related data such as lift array,cam timing angle,forward/reverse flow coefficient etc.My question is how to incorporate dimensional details of intake valve and exhaust valve of my engine in this template?