You may be right but not sure if there was in-depth disclosure about the exact reason why the LHTEC T800 was blocked for export. the T-129 issue pertains to supplying engines for export, I.e. the export licence not being granted to sell to Pakistan, similarly, the LM2500, though it may be dual-use, is marketed as a primarily Navy use gas turbine. So just hoping that PN has done its homework and that this isn't the nth time that we get bitten by the US.
However, guess there are more alternatives out there for this vis-a-vis attack helicopter engines.