Tacotron2 convert onnx issue

Hi, Thanks to this repository. I have a trained Text2Speech model(with custom data) on tacotron2 but when I try to convert my pytorch model to onnx, the outputted audio results are not as good as the pytorch model's results.
Also the length of the result audio file with onnx model is bigger than the result from my pytorch model.
I did not face any code errors while converting my model.
I am using the example provided on the espnet_onnx.

on issue 28, the author mentioned the same audio file problem when converting the tacotron2 pytorch model to onnx.
Is there any updates on this issue ?

Thank you!