For last 15 years HAL is delivering ALH Dhurv, Rudra without any so called delays. We did not receive any RR from Army, Navy and AF on delivery delays. But definitely RR was there when the production started.
Why we are not getting Automobiles on the same day of launch? Rolling out takes some time. Then supply will be consistent.
Now coming to MK1A. We have proof that MK1A exists in when we got the photos now. We know that GE engine is missing for now, since GE still priming up post COVID. IAF delays the procurement for long time, cannot whine about delays in production of initial batches. Weapons integration is not done is the big deal compared to not having the plane in its physical form itself. If this is the concern, an dedicated Project Manager can oversee the project with all scopes defined. He should allow scope creep bakchoid armed forces do.
Now HAL fully produces the Tejas MK1A. Answer is No, Fueslage is being manufactured by mulitple Companies like VEM, Dynamatec etc. All of them were building up an Fighter aircraft for the first time. Since last indigenous program is Marut.
Initial Hiccups will be there and production stabilize over the period.