I recently bought a SB200 from estate of silent key. It had been sitting for several years. It had had new capacitors and resistors installed and a soft key. High voltage is over 2000. Output maxes at 250 watts with 60 watts drive. Grid voltage is -1.9 when keyed. Plate current is 210 ma. Grid currrent is only to fist line, 10 ma I think. SWR to IC7300 is high at 2.5 - 3.0. I can use tuner to lower swr but output does not go up.. Any suggestions would be appreciated. Wa5woh, John Wolking.