Ok, for instance, this page shows all manufacturers that sell discs with media code MBIPG101R05. How come I can't see my PLATINUM in the list? Second, earlier you mentioned it is Moser Bayer India media
C'mon now. You can't expect a list put together by volunteers and users to be absolutely definitive, can you? And what difference does it make if Platinum is not on the list. What counts is MBIPG101R05. No one is going to fake that MID.
Try this app for a more thorough ID. They also update their database periodically.
Here's a typical printout:
Unique Disc Identifier : [DVD+R:MBIPG101-R05-001]
Disc & Book Type : [DVD+R] - [Not Available]
Manufacturer Name : [Moser Baer India Ltd.]
Manufacturer ID : [MBIPG101]
Media Type ID : [R05]
Product Revision : 
Blank Disc Capacity : [2,295,104 Sectors = 4.70 GB (4.38 GiB)]
Recording Speeds : [1x-2.4x , 4x , 6x-8x , 6x-16x]
Just run the ID, in this case MBIPG101 R05, through Google.
The first entry that popped up is this:
It may further enlighten (but probably confuse). But you will see that sometimes a slower burn can make a difference and that most times a TRT scan will mirror a Quality scan.
Then there is the debate over which scanning drive to use and at what speed for an accurate scan. Lite-on, NEC (Optiarc ... maybe, newer are Lite-on) and the original Benq.
Might be time to get a new drive anyway, they're only about $25 these days. Your Teac based, Panasonic chipset Plex was not held in high esteem by the scanning crowd.
Here's a scanning Lite-on.
You'll notice in the reviews that most new burners these days can burn 8X Taiyo Yuden media at 12X (fast enough) with excellent results making them an excellent and inexpensive choice. They also seem to do a good job with the much maligned CMC Magnetics Corp of Taiwan discs.
Here's one of my TYG02 8X burned at 12X with my Pioneer 115D and scanned in my BenQ.