It turns out Ultracast makes a resin set of properly sized exhaust pipes to fit these early Tamiya Corsairs, John @johnb.

Yeah, but the cost of shipping a set of those is double the price of the set. So it's back to scratch built for me.@johnb.

Used George's @gblair technique to mask the front canopy part. Works very well. I will definitely use the same approach on the sliding part.

Great masking using our friend's @gblair technique, my friend @johnb!

After finishing the masking of the front canopy part, I mounted it with Revell Contacta Clear.
Still in doubt if I will close the canopy completely or leave it open.

John @johnb - you and I are at the exact same stage on our Corsair builds. I just glued the wind screen on as well. I’m going to leave the canopy open. I notice that when wings are up canopy is often closed but when down and parked, canopy is left open more often than not. Also noticed all main wing flaps are in up position and rear stabilizer controls down when parked. Tamiya’s main wing inner flaps are purposely molded to be in the down position. Even if you cut off the locator nubs and try to glue then “up”, it doesn’t work. So I bit the bullet and ordered an “up” set from Ultracast and got then to toss in the proper oval exhaust pipes for extra six bucks Canadian, so it’s sorta a deal breaker since we U.S. denizens benefit on the exchange rate big time.

Looking good, John! Nice job on the windscreen mask. If I'm doing curved edges I use much thinner strips and they will bend along the edges nicely.