Whoever now owns the G.G. brand is remarkably secretive. I have tried to find them many times. There are many products available now under the GG brand that Mr Griffiths never sold, so clearly there is product development going on. The Sheer thread problem is typical of fakery. The original thread is lightly waxed, single ply , very strong for its diameter, and as said above recommended by several prolific fly tyers - see posts on YouTube by the featherbender. Lower quality threads usually give themselves away by the variable thickness of fibres making up the strand(s) The weakest invariably break on winding, giving that fuzzy look that it undesirableif you are going to the trouble of using Sheer. Basically, if it is cheap it aint real. There are very few real bargains on eBay.