Hello,nIn addition to the doubts in my previous comment I have another problem. Here is the board in DipTrace, where there are 8 pads on the left side of the board marked B+ G+ R+ Y+ etc. nBut when I am converting this into ODB++ format and importing it into SIWave, I do not see these left side pads.nThese are pads that will be used to merge another board with this one for analysing it altogether. How do I correct this?.Also, this is basically the lower 2 layers of a 4 layer PCB (which has been made as a 2+2 layer board). In this case will I be able to simulate using REsonant Mode solver? None of the individual boards have a power plane it has been done by traces.n