I recently purchased and started flying a Top Flite Giant Scale P51, which is covered, of course, with Aluminum Monokote. I bought a roll of Al Monokote to fix /patch things. I took a small sample from the P51. Both seem to shrink in the same way, but the material from the roll is nearly transparent, (you can see light through it and some features of the structure show through the covering) while the material from the P51 is essentially completely opaque. In addition, the roll is noticeably lighter in color, so my patches look terrible. I sent an email to the service contact for Top Flite, and they told me to send a sample of the "defective" roll, that they would send a replacement. I did that, and also included a sample from the plane to show the difference. That was 3 weeks ago, no response yet. Yesterday I spoke with another modeler with the same plane who had exactly the same problem. Does anyone know if there is another brand with an opaque Aluminum color that might match Top Flite material reasonably well?